In 1970, researchers at the University of Oxford were investigating a cannabis sample when they found a chemical that had never before been known to science. It wasn’t THC or CBD, the two most famous compounds created by cannabis plants. They called this new compound tetrahydrocannabivarin, a mouthful of a word usually shortened to THCV. For the next 50 years, THCV quietly developed a mythical status among cannabis connoisseurs, earning nicknames like the “sports car…